Something new under the sun

[corvi]

A dark straight line across the sky, which was a sky-thing I hadn't seen before. I think the dark line is the shadow of the contrail, projected onto the cloud below it like a shadow puppet by the sun. Have you seen something like this?

Comments

[randomdreams]

I have seen contrail shadows on other layers of clouds, but this looks more like twoeleven's explanation, to me.